How much power does my stepper motor need?
Examine the Stepper Motor’s Specifications Whatever it is, you’ll need to get a power supply double the rated voltage. So far motors with a rated voltage of 2.8 Volts, you’d need a power supply that runs 5.5 or 6 Volts.
How do I choose a power supply for my motor?
Voltage and current ratings. When selecting your motor, power supply, and Jrk controller, you must consider the voltage and current ratings of each. The rated voltage of a DC motor is the voltage it was designed to run at, and this is the voltage at which it will draw its rated currents.
What to look for in a stepper motor power supply?
When choosing a DC power supply for your stepper motor, you’re going to want to take note of three things: the voltage, the current, and the power supply type. The most complicated factor of these three is usually voltage and current, so we’ll cover those first.
How to calculate my power supply voltage and current?
This means that Ohm’s law (above) can to used to calculate the current requirements of the driver. You have 2 phases, and a current per phase of 0.33A, so your total current shouldn’t exceed 0.66A per motor. If you’re using 3 motors, and a 12V power supply, your total current should not exceed 0.66A per motor x 3 motors = 1.98A.
How much voltage do I need to run all three motors?
It goes down at high speeds as increasing back EMF cancels out the incoming voltage from the power supply. So finally, to answer the original question. You should only need about 0.33A to run all three motors, assuming they are wired bipolar parallel and your driver does not have any gross inefficiencies.
When does the peak current on a stepper motor occur?
The peak current listed in the datasheet is only achieved for a brief period during the motor coil charge cycle. Not only that, the charge on one motor coil will recirculate and end up charging the other coil.